Vise.



H. S. KUHN.

. VISE.

APPLICATION FILED SEPT. 27, 1911.

Patented A 519, 1912.

Q mm COLUMBIA PLANOORAPH 00., WASHINGTON, n. c.

UNITED STATES PATENT OFFICE.

HARRY S. KUHN, 0F WAYNESBORO, PENNSYLVANIA.

VISE.

Specification of Letters Patent.

Application filed September 27, 1911.

. Patented Apr. 9, 1912.

Serial No. 651,669.

' bench Vises such as used by machinists; and

it consists in the novel construction and combination of the parts hereinafter fully described and claimed.

In the drawings, Figure 1 is a longitudinal section through a vise constructed according to this invention. Fig. 2 is a crosssection through the vise, taken on the line 00-00 in Fig. 1.

A stationary furnished with lugs 3 for securing it to a work bench or other stationary support. The guide is rectangular in form, and 4 is a stationary vise jaw which projects from its upper part. A slidable bar 5 is provided and is arranged to slide in the guide 2. This bar is channel-shaped in cross-section, and 6 is a slidable vise jaw which projects from one end portion of it, and which is arranged to work opposite the stationary vise jaw 4.

The operating spindle 7 is arranged in the longitudinal channel 8 of the bar 5 and is journaled in one end portion of the bar, and 9 is a plate secured to the bar and engaging with a collar 10 on the spindle so as to prevent it from moving endwise in one direction. The projecting end portion of the spindle is provided with a suitable handle for revolving it; The inner end portion of the spindle 7 is j ournaled in a block 11 which is secured in the bar 5, and 12 is a collar on the spindle which bears against the block 11 and which prevents the spindle from moving longitudinally in the opposite direction. A second block 13 is secured in the bar 5 in front of the rear block 11. These two blocks 11 and 13 are formed separate from the bar 5, so that the channelshaped interior of the bar can be machined from end to end, and the blocks are then secured in place by suitable rivets. This enables the bar to be made with thin and light sides, and the interior side surfaces are guide 2 is provided and is parallel to each other, as well as the exterior surfaces which slide in the guide 2.

The operating spindle 7 is provided with a short screwthreaded portion 14 in the space between the blocks 11 and 18,and the spindle passes freely through a hole 15 in the front block 13. A nut 16 is arranged in engagement with the screwthreaded portion 14 of the spindle, and the forward movement of the nut is limited by the front block 13, so'that it cannot jam on the screwthread. The nut 16 has an inclined surface 17 on its lower side, and a dovetailed slot 18 is formed in this surface which is arranged at an angle to the axis of the operating spindle. v

A serrated locking bar 19 is secured to the guide 2 between the side portions of the slidable bar 5. j A serrated locking wedge or block 20 is arranged over the locking bar 19 and is provided with a dovetailed tongue which is slidable in the dovetailed groove or slot 18. The dovetailed form of the tongue and groove prevents the locking wedge from being detached from the nut, but permits it to be slid back and forth at an angle to the axis of the operating spindle, into and out of engagement with the locking bar. A link 21 is pivoted by a. pin 22 in a slot in the locking wedge at one end, and its other end is pivoted by a pin 23 to a short screwthreaded rod 24. The rod 24 is slidable loosely in a hole 25 in the rear block 11, and 26 is astop secured on the rod 24 by a setscrew 27. The stop 26 is arranged in the space between the locking wedge and the rear block, and it may be adjusted on the rod to any desired position. A nut 28 is provided on the free end portion of'the rod 24, and 29'is a retracting spring which encircles the rod and which is arranged between the nut 28 and the block 11. Two projections 30 are provided, one on each side of the locking wedge, and these projections slide in contact with the inner sides of the slidable bar 5, which are parallel, and the nut and the locking wedge are thereby prevented from revolving on the operating spindle.

When the parts are in the positions shown in Fig. 1, and the jaws are at a suitable distance apart to engage with the work, the locking wedge is in engagement with the locking bar, and when the work is placed between the jaws the slidable jaw can be caused to grip the work by turning the 0pcrating spindle in one direction. The work can subsequently be released by turning the operating spindle in the reverse direction. The aWs can be set quickly to suit different sizes of work by turning the operating spindie so as to move the nut to a prearranged extent toward the rear block 11. The spring 29 retracts the locking wedge until the stop 26 comes in contact with the rear block 11, and the continued rearward motion of the nut causes the locking wedge to be moved out of engagement with the locking bar by the action of the inclined surface 17 and the dovetailed tongue and groove. The bar 5 can now be slid longitudinally by hand so as to quickly place the two vise jaws at any desired distance apart. IVhen the operating spindle is revolved so as to move the nut away from the rear block 11, the locking wedge is pressed into engagement with the locking bar, and the jaws can be subsequently caused to grip the work which is placed between them, by turning the operating spindle.

Vhat I claim is:

1. In a vise, the combination, with a stationary guide provided with a vise jaw, of a guide bar slidable in the said guide and provided with a longitudinal channel and having also a vise jaw, a revoluble operating spindle arranged in the said channel and provided with a screwthreaded portion, a locking bar secured to and resting on the bottom portion of the said guide, a nut engaging with the said screw-t-hreaded por tion and provided with an inclined surface, a locking wedge arranged between the said inclined surface and the locking bar, means for preventing the said wedge and inclined surface from being moved apart but permitting them to slide relatively to each other, a block secured in the said channel, a springactuated rod supported by the said block and operatively connected with the locking wedge, and a stop on the said rod between the locking wedge and the said block.

2. In a vise, the combination, with a sta tionary guide provided wit-h a vise jaw, of a channel-shaped guide bar slidable in the said guide and also provided with a vise jaw,

an operating spindle journaled in the said bar and provided with a screw-threaded portion, a locking bar secured to the bottom portion of the said guide under the operating spindle, a nut arranged inside the said guide bar and engaging with the said screwthreaded portion and provided with an inclined surface, a locking wedge arranged between the said inclined surface and the locking bar, means for preventing the said wedge and inclined surface from being moved apart but permitting them to slide relatively to each other, a block secured in the slidable bar and supporting the inner end portion of the operating spindle, a spring-actuated rod supported by the said block and operatively connected with the locking wedge, and a stop on the said rod between the locking wedge and the said block.

3. In a vise, the combination with a stationary guide provided with a vise jaw, of a guide bar slidable in the said guide and provided with a longitudinal channel and having also a vise jaw, a revoluble operating spindle arranged in the said channel and provided with a screwthreaded portion, a locking bar secured to the said guide, a nut engaging with the said screwthreaded portion and provided with an inclined surface, a locking wedge arranged between the said inclined surface and the locking bar, said wedge being provided with lateral projections which engage with the sides of the longitudinal channel and prevent the nut fro-m revolving, means for preventing the said wedge and inclined surface from being moved apart but permit-ting them to slide relatively to each other, a block secured in the said channel, a spring-actuated rod supported by the said block and operatively connected with the locking wedge, and a stop on the said rod between the locking wedge and the said block.

In testimony whereof I have aflixed my signature in the presence of two witnesses.

HARRY S. KUI-IN.

Witnesses M. G. HARMONY, JOSEPHINE ROLLMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. O. 

